Ok I now create my texture once. I'm having some issues with this
> You're creating an extra copy of the texture data here. > To avoid that, you could use surfarray to create a surface > backed by a numpy array, do your drawing into that, and > then pass the numpy array directly to glTexImage2D. As I understand it, you suggest a surface with a surfarray.pixel2d bound to it. But I can't blit on such surface beacause it's locked. Did you mean drawing directly in surfarray or just create and update a surfarray.2darray which involve to do a copy of the native screen also ? Thanks for all your advises everyone. Le mercredi 30 juillet 2014 à 11:15 +1200, Greg Ewing a écrit : > sylvain.boussekey wrote: > > I managed to do it in opengl but perfs are poor. > > A few things to consider: > > > textureData = pygame.image.tostring(textureSurface, "RGBA", 1) > > * You're creating an extra copy of the texture data here. > To avoid that, you could use surfarray to create a surface > backed by a numpy array, do your drawing into that, and > then pass the numpy array directly to glTexImage2D. > > > texture = glGenTextures(1) > > glBindTexture(GL_TEXTURE_2D, texture) > > glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST) > > glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST) > > * You're creating a new OpenGL texture for each frame and > then discarding it. Try making these calls just once > at the beginning and re-using the texture. > > * You're using a non-power-of-2 texture size. Not all > OpenGL implementations support that; yours seemingly does, > but it might be less efficient than a power-of-2 size. > You could try allocating the next larger power-of-2 size and > updating the part that you use with glTexSubImage2D(). >
